It began in 1945, at the end of the Pacific War. Alien invaders filled the earth's Skies, and mankind was forced to confront an unprecedented threat. For the first time in human history, people of all cultures came together under one banner. This war has now been raging for over fifty years. Countless lives have been lost, and the Japanese military is now forced to rely on young people such as Atsushi Hayami and his high school class, also known as Unit 5121. This new generation fearlessly struggles on with the aid of the HWT humanoid combat machines and the devastating PBE bomb. (Source: Media Blasters)

A new era of exploration begins with the sudden appearance of a new continent known as Magmell. Magmell's vast trove of never-before-seen natural resources spurs on the exploration of its vast landscape. However, the unknown is not always docile. In order to sustain the expeditions, people known as anglers specialize in dealing with Magmell's dangerous wildlife. One such angler is the highly-skilled and experienced Inyou, who performs search and rescue operations for clients with the help of his assistant, Zero.

Brandon Heat and Harry MacDowel, two friends so close they could be called brothers, receive an abrupt and violent reminder one fateful day of how appallingly merciless the world around them can be. Their whole lives before then were simple and easygoing, consisting largely of local brawls, seducing women, and committing petty theft to make a living and pass the time. What they failed to realize is that in this cruel world, happiness is fleeting, and change is inevitable. Enter Millennion, the largest and most infamous mafia syndicate in the area, which accepts Brandon and Harry into their ranks and starts them at the bottom of the food chain. Harry has ambitions to ascend the ranks and one day replace Big Daddy as the supreme leader of Millennion, while Brandon only wishes to support his friend and appease Big Daddy who has taken custody of the woman Brandon loves. Based off the third-person shooter video game under the same name, Gungrave is an epic story of friendship, betrayal, and avarice that spans the course of several years, ultimately tying back to the gripping and foreboding first episode, all the while building up to the story's thrilling conclusion.

In 2100, the newly built Bayside City serves as Japan's premier international port. The Angel Arms Company is established by a former policewoman named Takako, to help wage war on terrorism with armed security suits. When the mayor is assassinated, the women of Angel Arms end up protecting the evil crime-lord Hassan, in hopes that his information will help bring down a global terror ring. Takako's back is to the wall as a band of criminals plot to kill Hassan, and the organization's leader is revealed to be the former lover of Angel Arms' own Alisa. (Source: ANN)